firmament /ˈfɜːməmənt/

• 1.  

  N-SING（单数型名词） The firmament is the sky or heaven. 苍穹; 天国 [文学性]['the' N]

  例：

  There are no stars in the firmament.

  天空没有星星。

• 2.  

  N-SING（单数型名词） If you talk about the firmament in a particular organization or field of activity, you mean the top of it. 上层 ['the' N, usu with supp]

  例：

  He was rich, and a rising star in the political firmament.

  他很有钱，更是高层政坛一颗冉冉升起的新星。